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Crews used heavy equipment to excavate a six-foot deep, eight-foot wide section of the roadway to remove loose material underneath the pavement near milepost 388, where the sinkhole was originally spotted on Saturday afternoon on the northbound lane.

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State Route 89A switchbacks remains closed, sinkhole repairs now underway

PHOENIX - Repairs of the roadway damage caused from a sinkhole started this week along State Route 89A in the Oak Creek Canyon switchbacks, but the roadway remains closed (mileposts 387-390) and is expected to remain closed until later this week, according to the Arizona Department of Transportation.